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KMID : 0351619680090020047
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Kyungpook Medical Journal
1968 Volume.9 No. 2 p.47 ~ p.53
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Studies on the Supplementary Effect of Soybean Protein on the Rice and Berley Missitgaru, a Roasted and Pounded Product, and Turnover Rate of Plasma Albumin as an Direct Indicator of Protein Status
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Abstract
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Nutritive value of protein of barley and rice iVlissitgaru, which are roasted and Bounded powder and supplementary effect of soybean protein on the foods were studied in young rats. In evaluating the nutritive value of food protein in the animal experiment the turnover rate of plasma albumin-I131, as a possible single direct indicator of protein status, was estimatedand compared with weight gain, hemoglobin and plasma protein. Barley ~lissitgaru diet supported. significantly better gro~vth (1.60 g/day) than did rice Missitgaru diet (0.14 g;´day) at the same nitrogen content (protein 11.3%, N X 6.25),suggesting the more destruction of protein in rice through the roasting method. When the-Missitgaru diet was partially replaced with soybean protein, rats grew at a significantly faster rate (2.30 g/day) even though the supplementary effect was inferior than that of casein (3.91 g/day).
The turnover rate of plasma albumin-Iasi of the rice Missitgaru fed rats, which showed extremely limited body weight gain, was significantly slower than that of rats fed the diet partially replaced with barley Missitgaru (weight gain ; 0.88 g/day). However, there was no noticeable difference in the rate among the paritially supplemented food groups, i. e., with barley Missitgaru, soybean protein and casein, where considerable different in growth were observed. The turnover rate of albumin, which was impressed as to be regulated within normal so far as possitive nitrogen balance is maintain, was hasten by exces;~ protein intake. No significant difference was found in hemoglobin, hematocrit and plasma protein among these groups except a slight lower value of hemoglobin in r:c: Missitgaru fed group. Atov~: result suggests that the estimation of turn-over rate of plasma albumin would be useful in assessing the protein status.
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KEYWORD
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